Hi,
In the following, I am trying to get the parameters from the fitting
function and write those values to the figure using latex. I could not
find a way to put those values other than typing by hand.
Can somebody help me two fix the last two lines.
Thank you,
Rath
I am using ROOT 3.05/05 , RedHat 8.0 Linux
+++++++++++ ++++++++++++++++++++++++++++++++++++++++++
{
gROOT->Reset();
Double_t L,d;
ntuple->Draw("x:y>>h1","","profs");
TLatex l;
l.SetTextFont(48);
l.SetTextSize(20);
h1->GetXaxis()->SetTitle("x");
h1->GetYaxis()->SetTitle("y");
gStyle->SetOptFit();
h1->Fit("pol1");
h1->SetMaximum(50.);
c1->SetFillColor(0);
gStyle->SetFillColor(0);
L = h1->GetFunction("pol1")->GetParameter(1);
d = h1->GetFunction("pol1")->GetParameter(0);
// How do I fix these two lines
l.DrawLatex(45,13.0, "L = %f",L);
l.DrawLatex(45,12.2, "D = %f",d);
}
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